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In situ high-resolution measurement of phosphorus, iron and sulfur by diffusive gradients in thin films in sediments of black-odorous rivers in the Pearl River Delta region, South China.
Environ Res. 2020 10; 189:109918.ER

Abstract

The cycling of phosphorus (P), iron (Fe) and sulfur (S) in sediments has been previously investigated, but its impacts on the formation of black-odorous waterbodies remains unclear. Here, high-resolution (i.e., 2 mm for P and Fe, and 0.042 mm for S of 2D presentation) simultaneous measurements of P, Fe, and S profiles in river sediments based on the diffusive gradients in thin-films (DGT) technique were conducted in the Pearl River Delta region, South China. Similar distribution trends and significant positive correlations (R = 0.67-0.93, p < 0.01) were observed between Fe and P. Considering the high diffusion fluxes of Fe and P together, it revealed that P release was promoted by the Fe reduction. The two-dimensional labile S profiles showed that their concentrations in sediments were higher by factors of 1.6-20 than those in overlying water. The minor diffusion fluxes of S and the accumulation of acid volatile sulfide indicated that S2- combining with Fe2+ occurred prior to diffusion. Furthermore, the formation mechanisms of black-odorous waterbodies were explored: (i) oxygen depletion by COD and NH4+‒N and large amounts of sulfate input were the main exogenous driving factors. (ii) Reduction of Fe and S to form ferrous sulfide accompanied with P release in sediments were the dominant endogenous causes. These observations together with mechanism analysis can provide a basis for the governance of black-odorous rivers.

Authors+Show Affiliations

South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510530, China; State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control, Guangzhou, 510530, China.South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510530, China; State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control, Guangzhou, 510530, China.South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510530, China; Guangdong Key Laboratory of Water and Air Pollution Control, Guangzhou, 510530, China.South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510530, China; Guangdong Key Laboratory of Water and Air Pollution Control, Guangzhou, 510530, China.South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510530, China; State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control, Guangzhou, 510530, China. Electronic address: zhujialiang@scies.org.State Key Laboratory on Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China; State Key Laboratory on Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China. Electronic address: peilei@nju.edu.cn.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

32678742

Citation

Rong, Nan, et al. "In Situ High-resolution Measurement of Phosphorus, Iron and Sulfur By Diffusive Gradients in Thin Films in Sediments of Black-odorous Rivers in the Pearl River Delta Region, South China." Environmental Research, vol. 189, 2020, p. 109918.
Rong N, Lu W, Zhang C, et al. In situ high-resolution measurement of phosphorus, iron and sulfur by diffusive gradients in thin films in sediments of black-odorous rivers in the Pearl River Delta region, South China. Environ Res. 2020;189:109918.
Rong, N., Lu, W., Zhang, C., Wang, Y., Zhu, J., Zhang, W., & Lei, P. (2020). In situ high-resolution measurement of phosphorus, iron and sulfur by diffusive gradients in thin films in sediments of black-odorous rivers in the Pearl River Delta region, South China. Environmental Research, 189, 109918. https://doi.org/10.1016/j.envres.2020.109918
Rong N, et al. In Situ High-resolution Measurement of Phosphorus, Iron and Sulfur By Diffusive Gradients in Thin Films in Sediments of Black-odorous Rivers in the Pearl River Delta Region, South China. Environ Res. 2020;189:109918. PubMed PMID: 32678742.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In situ high-resolution measurement of phosphorus, iron and sulfur by diffusive gradients in thin films in sediments of black-odorous rivers in the Pearl River Delta region, South China. AU - Rong,Nan, AU - Lu,Wenzhou, AU - Zhang,Chaoyu, AU - Wang,Yishu, AU - Zhu,Jialiang, AU - Zhang,Wenqiang, AU - Lei,Pei, Y1 - 2020/07/11/ PY - 2020/03/20/received PY - 2020/07/03/revised PY - 2020/07/04/accepted PY - 2020/7/18/pubmed PY - 2020/12/15/medline PY - 2020/7/18/entrez KW - Black-odorous waterbodies KW - Diffusion flux KW - Diffusive gradients in thin films (DGT) KW - Pearl River Delta region KW - River sediment SP - 109918 EP - 109918 JF - Environmental research JO - Environ Res VL - 189 N2 - The cycling of phosphorus (P), iron (Fe) and sulfur (S) in sediments has been previously investigated, but its impacts on the formation of black-odorous waterbodies remains unclear. Here, high-resolution (i.e., 2 mm for P and Fe, and 0.042 mm for S of 2D presentation) simultaneous measurements of P, Fe, and S profiles in river sediments based on the diffusive gradients in thin-films (DGT) technique were conducted in the Pearl River Delta region, South China. Similar distribution trends and significant positive correlations (R = 0.67-0.93, p < 0.01) were observed between Fe and P. Considering the high diffusion fluxes of Fe and P together, it revealed that P release was promoted by the Fe reduction. The two-dimensional labile S profiles showed that their concentrations in sediments were higher by factors of 1.6-20 than those in overlying water. The minor diffusion fluxes of S and the accumulation of acid volatile sulfide indicated that S2- combining with Fe2+ occurred prior to diffusion. Furthermore, the formation mechanisms of black-odorous waterbodies were explored: (i) oxygen depletion by COD and NH4+‒N and large amounts of sulfate input were the main exogenous driving factors. (ii) Reduction of Fe and S to form ferrous sulfide accompanied with P release in sediments were the dominant endogenous causes. These observations together with mechanism analysis can provide a basis for the governance of black-odorous rivers. SN - 1096-0953 UR - https://www.unboundmedicine.com/medline/citation/32678742/In_situ_high_resolution_measurement_of_phosphorus_iron_and_sulfur_by_diffusive_gradients_in_thin_films_in_sediments_of_black_odorous_rivers_in_the_Pearl_River_Delta_region_South_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0013-9351(20)30813-6 DB - PRIME DP - Unbound Medicine ER -